import json

from manager_mysql import TodoManagerMysql

from flask import Flask, request

app = Flask(__name__)

# 对中文编码 JSON 格式时，使用原始中文
app.config['JSON_AS_ASCII'] = False

manager = TodoManagerMysql()
manager.init_db()


@app.route("/")
def hello_world():
    return "<p>Hello, World!</p>"


@app.route("/todos", methods=['GET'])
def list_todos():
    return {"todos": [x.__dict__ for x in manager.list_todos()]}


@app.route("/todos", methods=['POST'])
def create_todo():
    # print(request.form)
    """
    创建待办事项接口
        参数： title，表示待办事项的内容
        成功，返回已创建的待办事项 JSON 表示
    """
    if 'title' not in request.form:
        return '参数错误，必须提供 title 参数', 400
    todo = manager.create(request.form['title'])
    return todo.__dict__


@app.route("/todos/mark_completed", methods=['GET'])
def mark_completed():
    if 'todo_id' not in request.args:
        return '参数错误，必须提供 todo_id 参数', 400
    todo_id = int(request.args['todo_id'])
    todo = manager.mark_completed(todo_id)
    if todo is not None:
        return todo.__dict__
    else:
        return f'todo not found, todo_id={todo_id}', 404

@app.route("/todos/delete",methods=['POST'])
def delete():
    if 'id' not in request.form:
        return '参数错误，必须提供 id 参数', 400
    id = manager.delete(int(request.form['id']))
    return todo.__dict__


if __name__ == '__main__':
    app.run()